The toploader storage box is designed specifically for sleeves, and cards.One trading card storage box can fit over 1200 sleeveless cards,over 900 single-sleeved cards,or over 700 double-sleeved cards,and great to fits 215 3”x4” standard top loaders or 50 35 pt magnetic card holders. -Fit for Trading cards, sleeves. -The magnetic design of the lid makes it easy to open and close. -Sturdy hard material. Ensure that the card is safe and undamaged.